Density-Dependent Effects in Experimental Larval Populations of Anopheles arabiensis (Diptera: Culicidae) Can Be Negative, Neutral, or Overcompensatory Depending on Density and Diet Levels
Density-Dependent Effects in Experimental Larval Populations of Anopheles arabiensis (Diptera: Culicidae) Can Be Negative, Neutral, or Overcompensatory Depending on Density and Diet Levels
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DOI：
10.1603/me09209
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发表时间：
2011-03-01
影响因子：
2.1
通讯作者：
Benedict, M. Q.
中科院分区：
文献类型：
--
作者：
Gilles, J. R. L.;Lees, R. S.;Benedict, M. Q.
阿拉伯按蚊（双翅目：蚊科）幼虫饲养从孵化到成人阶段在实验室的饮食和幼虫浓度范围内使用析因设计。该范围限制了大多数幼虫密度和饮食浓度，这将使幼虫的生长和生存使用特定的饮食配方和水量，我们测试。我们确定了这些变量如何影响三个结果，如下：幼虫发育率，存活率和翅长。正如以前报道的那样，当饮食限制时，作为幼虫密度增加的函数的存活率的负密度依赖性是对所有结果的普遍影响。当饮食不受限制时，未观察到密度依赖性，并观察到3例过度代偿存活。我们讨论了这些结果的背景下，大量饲养的饮食和幼虫密度和幼虫竞争的控制策略的影响。
Anopheles arabiensis Patton (Diptera: Culicidae) larvae were reared from hatching to the adult stage in the laboratory under a range of diet and larval concentrations using a factorial design. The range circumscribed most of the larval densities and diet concentrations that would allow larval growth and survival using the particular diet formulation and water volume we tested. We determined how these variables affected three outcomes, as follows: larval development rate, survival, and wing length. As has been reported previously, negative density dependence of survival as a function of increased larval density was the prevalent effect on all outcomes when diet was limiting. When diet was not limiting, density dependence was not observed, and three cases of overcompensatory survival were seen. We discuss these results in the context of diet and larval densities for mass rearing and the effect of larval competition on control strategies.